"Me and Bri thought we should have our own show to show people that we're not just small; we're like everybody else," said Brad, 21, who explained that one of the biggest challenges they face are people that he says "treat us like we're kids."

"When we go out to restaurants they give [me] a kid menu and a kid's cup, so when I go in I usually have a beard and a mustache," said Brad.

Bri, 23, has been crowned at the "World's Shortest Living Woman," but don't let her diminutive stature fool you -- she's not afraid to speak her mind, especially when it comes to her brother.

"She likes to pick on me a lot," said Brad. "She gets on to me about not cleaning my room or something that's simple and then it turns into a big argument."

Big Tiny premieres on TLC tonight at 10 p.m. ET/PT, and the siblings might already be feeling the pressures of stardom.

"I think we need a bodyguard, because there's going to be a lot of people wanting [our] autograph or pictures," said Brad. "Sometimes you need to say no but they keep coming."